Dhingra, P.L. <br/><br/>
Master telegraph:  a comprehensive and practical.../ 
P.L. Dhingra,  1961 
 - 2nd ed. 
 - Delhi:  Asia Book Centre 
 - 122 p.;  21 cm. 
<br/><br/> Library has Vol. 1-3 
<br/><br/>Vol. 1 -v.2 -v. 3, 1961 
<br/><br/><label>ISBN: </label> Rs. 4.00 (vo.1)  Rs. 7.00 (vol.2)  Rs. 7.00 (vol.3) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommuniction<br/>Telegraph<br/>Telegraph lines<br/>Telegraph lines--Design and construction
<br/><br/><label>Dewey Class. No.: </label>621.382